Variable-rigidity double-mass vibration exciter type super-huge vibration mill

Abstract

The invention relates to a vibration mill, in particular to a variable-rigidity double-mass vibration exciter type common vibration mill or super-huge vibration mill, belonging to the technical field of vibration utilization engineering. The vibration mill comprises an upper mass, a lower mass, a motor, a motor base, a coupling, a coupling guard, a master vibration spring, a vibration isolation spring and a base, wherein the upper mass comprises a barrel, a feed port, an end cap, a discharge port, a vibration exciter, a right connecting frame, a milling medium, a left connecting frame and a counterweight body; the upper mass and the lower mass are connected through the master vibration spring, and the inner diameter of the master vibration spring is matched with the outer diameter of a guide pillar of the master vibration spring on the upper mass and the lower mass; and the lower mass is supported on the base through the vibration isolation spring. The barrel can be actively supported on the lower mass through the master vibration spring, and the vibration exciter is rigidly solidified on the right side of the barrel by using a right coupling bracket.

Description

technical field [0001] The present invention relates to a vibrating mill of variable stiffness two-mass exciter type extra-large vibrating mill, in particular to a general vibrating mill or extra-large vibrating mill with variable stiffness, two-mass body and exciter excitation form, belonging to Vibration utilization engineering technology field. Background technique [0002] Vibrating mill is a vibrating mechanical equipment that uses the principle of vibration to complete material crushing operations. Ordinary vibrating mills are composed of one or more cylindrical or other shaped containers supported on springs. This container either rotates at the center of gravity or passes through multiple The exciter tuned on the center of gravity performs an unbalanced motion similar to circular vibration, and the grinding medium (the material to be ground and the medium) installed in the mill container collides and rubs, and the crushing is due to the friction between the grinding ...

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Problems solved by technology

[0004] (1) High energy consumption: Due to the existence of low-energy areas inside the mill cylinder and the constant stiffness system, the energy consumption of the mill system under variable load characteristics is still high and the efficiency is low

[0005] (2) Structural fragility: the local body structure is weak, easily twisted, and easily damaged; resulting in high frequency of repairs or ineffective repairs

[0006] (3) Bearing problems: There are impacts, collisions, and frictional loads between the various parts of the bearings, resulting in a vicious cycle of heat generation, wear, and lubricant waste pollution, which greatly increases the probability of bearing failure

[0007] (4) Spring problem: Metal coil springs, air springs or rubber springs are mostly used in vibratory mills. When there is damping, the amplitude is large and the body stress is large. When the damping is large, the amplitude is small and the efficiency is significantly reduced.

[0008] (5) Vibration isolation problem: The vibration isolation effect of the single-mass vibration system is poor when it is working. Under the continuous, large and changing impact, collision, shear and other variable loads, on the one hand, the vibration will be directly transmitted to the equipment foundation and affect To the peripheral equipment and buildings, in severe cases, the machine will be damaged and stop production, the life of the long-term running machine will be shortened, the wearing parts will fail prematurely, and the frequency of maintenance will increase, which will affect the normal operation of the vibration mill; on the other hand, it will generate large noise as a source of noise pollution Seriously affect the operator and the surrounding environment or make it intolerable

[0009] (6) Restriction of large-scale: the above problems have always been a problem that has plagued the development of vibratory mills, and it has been severely restricted by large-scale or super-large

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